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. also to enable the organ itself to regulate that gine is set in motionno further attention is PATENT OFFICE.

JOHNW. GILBERT, or New YORK, NY.

AUTOMATIC AIR-REGULATOR FOR ORGANS.

SPECIFICATION forming part of Letters Application filed March 24, 188thPatent No. 364,243, dated June '7, 1887.

Serial No. 196,311. (No model.)

To all whom it may concern:

Be it known that I, JOHN WV. GILBERT, a citizen of the United States,residing at New York city, in the county of New York, and in the Stateof New York, have invented certain new and useful Improvements inAutomatic Attachments for Organs; and I do hereby declare that thefollowing is a full, clear, and exact description thereof. y

The object of myinvention is to provide organs or other musicalinstruments with air under all the variable quantities required,and

supply automatically, so that the air-reservoir is kept full under allconditions of the working or playing of the said organ. This I effect bymeans of the transmission motion from the engine to the blowingapparatus of the organ,by using a friction-clutch to connect themotor-shaft wi-ththe shaft that gives the motion to the blowingapparatus. I operate the said'clutch by a connection with the movingboard of the air-reservoir of the organ, so that any variation of speedcan be given to the shaft of the blowing apparatus, or stopped entirelywhenever it may be necessary to do so, and at the same time keep theengine constantly in motion, so as .to operate the blowing apparatusimmediately, it'is required to do so, to refill or keep up the supply inthe organ, so that after the motor or ennecessary.

In order to more fully describe my invention, I will refer to theaccompanying draw-- ings, forming a part ofthis specification.

Figure I is a plan View of an organ, showing how my automatic attachmentis connected thereto. Fig. II is a sectional view taken on line no 00,Fig. I, showing the position ofthe rocking bar and shaft. Fig- III is asectional view on lineg 3 Fig. I. Fig. 1V is an enlarged sectional viewof the clutch used in connect-ion with my invention.

.Letter A represents the organ, which'may be of any construction. B isthe bellows or blowing apparatus of the same operated by the crank-shaft0, having on its outer end outside the organ the pulley D. Thiscrankshaft and pulley are operated by belt E, pass ing around pulley F,fastened onto shaft G.

This shaft G is connected to the shaft H of the gas-engine I by means ofthe automatic clutch J. An enlarged view of same can be seen in Fig. IV.

To the air reservoir or receiver 0 of the organ is attached the rope orcable m, which passes over pulleys an and down to within an inch of therocking bar P. This end of the rope or cable is fastened to the weights9. This rocking or cross arml? is attached to the rocking shaftR,whichis j ournaled onto standards r 0'. One end of this rocking arm isprovided with weights 3 s.

The end a of the rocking shaft It has attached to it the stirrup orforked arm w,which surrounds the grooved sheave or pulley jof the clutchJ.

When the air-reservoir O of the organ is empty, the weight 9, attachedto the cable m, will be drawn up from the rocking bar 1?. This allowsthe said bar to-tilt downward by reason of the weights 9. When the saidrocking arm is thus tilted, the forked arm 10 of the rocking shaftRcauses the clutch J to operate and allow the engine-shaft H (which hasbeen in motion) to transmit its motion to shaft G.

\Vhen this is done, motion is immediately communicated to thecrank-shaft 0, through the agency of the belt E, which sets in motionthebellows or blowing apparatus of the organ.

Now, as the air is pumped into the airrccei'ver O the weighted end ofthe cable on will drop down upon the free end of the rocking bar P andcounterbalance the weighted end of said bar and bring it in a levelposition. When this is done, the forked arm 10 of the shaft R is thrownoutward and releases the clutch and disconnects shaft H from shaft G,thus depriving the last mentioned shaft of its motive power withoutstopping the engine.

As soon as the shaft G is disconnected from shaft H it will stop,likewise the crank-shaft O and bellows 13;but as the air is being used,by reason of the playing of the organ, the weighted end of the cable atwill rise and release its hold on the free end of the rocking bar I? andpermit it to tilt again, as described before, and perform automaticallythe hereinbefore named function of operating the clutch and connectingand disconnecting the shafts G with air without the stopping or startingof the engine-during the entire playing or using of the said organ.

The clutch shown in Fig. IV is the one that will be used in connectionwith my invention; but, as it is already patented, no claim will be madethereon, and no description has been made thereof as to its internalconstruction.

I am aware that any well-known clutch that will perform the office oftransn'iitting mo tion from a running shaft to a stationary one can beused in connection with my invention. 4 My invention is applicable toany organ used in churches or other places.

Having thus described my invention, I desire to clai1n- 1. The automaticair-supplier for organs, consisting of the bellows with shaft G, given adifferential or variable motion through the action of the clutch J,fastened on the shaft If. of the engine and regulated in movement fromthe said bellows by the cable m, having weight 1 attached, and therocking arm P, fastened on the shaft R, substantially as and for thepurpose set forth.

2. In an automatic airsupplicr for organs, the cable m, attached toainreservoirO, and

provided with weights g, in combination with rocking arm P,substantially as set forth.

3. In an automatic air-supplier for organs, the rocking arm P, withweights s,and attached to rocking shaft R,'having forked arm '10, incombination with the cable m, substantially as set forth.

4. In an automatic airsupplier for organs, the forked arm w,attaehed tothe shaft R, with the rocking arm P, in combination with the clutch J,substantially as described.

5. In an automatic air-supplier for organs, the shaft G- ,with pulley F,in combination with the clutch J and shaft of engine If, substantiallyas set forth.

6. In an automatic airsnpplier for organs, the crankshaft O, with pulley1), in combination with belt 16 and shaft G, substz'mtially as setforth.

In testimony that I claim the foregoing I havehercnnto set my hand this11th day of February, 1886.

JO H \V. GILBERT.

Vitness'cs:

F. BARRETT, II. A. SIERRY.

